01 - Pat the brisket thoroughly dry with paper towels to ensure proper seasoning adherence. Rub olive oil evenly over all surfaces of the meat.
02 - Combine smoked paprika, cumin, garlic powder, onion powder, oregano, salt, black pepper, and chili powder in a small bowl. Mix until uniformly blended.
03 - Massage the dry rub mixture generously over the entire brisket, pressing firmly to adhere the spices to the surface.
04 - Place the seasoned brisket in the slow cooker with the fat side facing up. This allows rendered fat to baste the meat during cooking.
05 - Whisk together ketchup, apple cider vinegar, brown sugar, Worcestershire sauce, Dijon mustard, smoked paprika, garlic powder, onion powder, and liquid smoke in a medium bowl until completely smooth.
06 - Pour half of the prepared BBQ sauce over the brisket. Reserve the remaining half for serving and finishing.
07 - Cover and cook on low setting for 8 hours. The brisket is done when it offers no resistance and easily shreds with a fork.
08 - Carefully remove the brisket from the slow cooker and transfer to a cutting board. Let rest for 10 minutes to allow juices to redistribute.
09 - Skim excess fat from the cooking liquid remaining in the slow cooker. Combine the defatted liquid with the reserved BBQ sauce and mix thoroughly.
10 - Slice the brisket against the grain into thin strips or shred with forks. Serve immediately with the prepared BBQ sauce on the side.